springboot2.1.0、MongoDB简单使用_springboot 2.1 mongodb

一）在pom.xml文件中引入MongoDB需要的jar

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
 
    <groupId>com.oysept.springboot</groupId>
    <artifactId>oysept-springboot-mongodb</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>
 
    <name>oysept-springboot-mongodb</name>
 
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.0.RELEASE</version>
        <relativePath/>
    </parent>
 
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>
 
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
 
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
		
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
		
        <!-- mongodb -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-mongodb</artifactId>
        </dependency>
    </dependencies>
 
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

 

二）在application.properties中添加MongoDB配置

server.port=8080
 
spring.data.mongodb.uri=mongodb://localhost:27017/newdb
#spring.data.mongodb.uri=mongodb://name:password@localhost:27017/newdb

 

三）添加一个MongoDB中的Entity类

package com.oysept.springboot.entity;
 
import org.springframework.data.annotation.Id;
import org.springframework.data.mongodb.core.mapping.Document;
 
/**
 * 实体类,默认命名customerEntity,也可以指定命名@Document(collection="customer")
 * @author ouyangjun
 */
@Document(collection="customer")
public class CustomerEntity {
 
    @Id
    private String id;
    private String firstName;
    private String lastName;
    
    public CustomerEntity() {}
    
    public CustomerEntity (String firstName, String lastName) {
        this.firstName = firstName;
        this.lastName = lastName;
    }
 
    public String getId() {return id;}
    public void setId(String id) {this.id = id;}
 
    public String getFirstName() {return firstName;}
    public void setFirstName(String firstName) {this.firstName = firstName;}
 
    public String getLastName() {return lastName;}
    public void setLastName(String lastName) {this.lastName = lastName;}
}

 

四）添加一个MongoDB接口Repository操作工具类

package com.oysept.springboot.repository;
 
import java.util.List;
 
import org.springframework.data.mongodb.repository.MongoRepository;
 
import com.oysept.springboot.entity.CustomerEntity;
 
/**
 * mongodb自定义查询
 * @author ouyangjun
 */
public interface CustomerRepository extends MongoRepository<CustomerEntity, String> {
	
    public CustomerEntity findByFirstName(String firstName);
	
    public List<CustomerEntity> findByLastName(String lastName);
}

 

五）新增一个MongoDB main方法测试工具类

package com.oysept.springboot.test;
 
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
 
import com.oysept.springboot.entity.CustomerEntity;
import com.oysept.springboot.repository.CustomerRepository;
 
@RunWith(SpringRunner.class)
@SpringBootTest
public class MongoDBTest {
 
    @Autowired
    private CustomerRepository repository;
	
    @Test
    public void addMongoDB() {
        // 删除
        repository.deleteAll();
		
        // 添加
        repository.save(new CustomerEntity("ouyangjun", "oysept"));
        repository.save(new CustomerEntity("liujie", "oysept"));
 
        // 查询
        System.out.println("查询-------------------------------");
        for (CustomerEntity entity : repository.findAll()) {
            System.out.println("firstName: "+entity.getFirstName()+",\t lastName: "+entity.getLastName());
        }
        
        // 根据firstName查询
        System.out.println("\n根据firstName查询--------------------------------");
        CustomerEntity et = repository.findByFirstName("ouyangjun");
        System.out.println("firstName: "+et.getFirstName()+",\t lastName: "+et.getLastName());
        
        // 根据lastName查询
        System.out.println("\n根据lastName查询--------------------------------");
        for (CustomerEntity entity : repository.findByLastName("oysept")) {
            System.out.println("firstName: "+entity.getFirstName()+",\t lastName: "+entity.getLastName());
        }
    }
}

 

六）添加一个springboot启动类，并展示项目结构图

package com.oysept.springboot;
 
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
 
/**
 * springboot启动类
 * @author ouyangjun
 */
@SpringBootApplication
public class MongoDBApplication {
 
    public static void main(String[] args) {
        SpringApplication.run(MongoDBApplication.class, args);
    }
}

项目结构图：

最后启动MongoDBApplication类，可用main方法测试类测试。

 

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